analogue encrypted cold wallet
save your passcode or private key for kryptomoney and banking or any other security in a unique form . with one universal quad you can choose over 128 different symbols . which can be individual coded on the code list . only the list and the quadrat register together can read the code you arrange .
2^7 symbols in one quad 128 possibilities . physical passcode storage . 26 letters in the upper and lower case and numbers from 0 – 9 together = 62 different symbols each with 128 possibilities to encode if you use the 2048 words from ( https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt ) security level is 2048^128 minimum encryption level for lowercase letters is 1 to 26^128
the top secret of storage - minimum encryption level = 1 to 26^128
26^128 = 13079421638632078538609985886760523574926223260449315332780141613109448755835972767166862958721190041422043896326261700101811115130162354414853265170521645989511987615710527751192576